bulge on the left side of my back.rib dislocated?

I feel a bulge on the left side of my back , right above my waist, on my left side. I feel pain touching a specific spot (a rib?) which is not exactly the spot where I have the bulge. The pain started almost 2 weeks ago, very strong (like I could not move) but I felt no bulge at that time. Now I can move more or less 100 with minimal pain but I am worried about this bulge